HeatCam examples .... Please help!

Processing Electronics (Arduino, etc.)
4

Hello,

This was just a quick look at this !
I have a lot of experience getting examples working. :)

Try this:

Arduino Code 
void setup() 
  {
  Serial.begin(115200);
  }

void loop() 
  {
  // Print the temperature value of each pixel in floating point degrees Celsius
  // separated by commas

  float temp = 10.00; 
  for(unsigned char i = 0; i < 64; i++)
    { 
    //Serial.print(grideye.getPixelTemperature(i));
    Serial.print(temp, 2);
    Serial.print(",");
    temp += 0.25; 
    } 

  // End each frame with a linefeed
  Serial.println();

  // Give Processing time to chew
  delay(100);
  }
Processing Code 
if(myPort.available() > 64)
    {
    myString = myPort.readStringUntil(13);
  
    // generate an array of strings that contains each of the comma
    // separated values
    //println(myString);
    
    if (myString != null)  
      {
      trim(myString);  
      String splitString[] = splitTokens(myString, ",");
      //printArray(splitString);
      if (splitString.length == 65) //65 for that last bit of data after the last ',' !
        {
    // for each of the 64 values, map the temperatures between 20C and 40C
    // to the blue through red portion of the color space
        for(int q = 0; q < 64; q++)
          {
          temps[q] = map(float(splitString[q]), 20, 40, 240, 360);
          }
        //printArray(temps);
        }  
      }
    }

Please take a close look at what I did.
I added a lot of checks!
I used trim to remove the linefeed (goes along for the ride from println()) before splitting it.
I added a lot of print statements to see what was being received; uncomment these to understand this.
The data length of spitString array is actually 65 because there is an empty string after the last ‘,’

Reference:
SparkFun_GridEYE_Arduino_Library/examples/Example4-ProcessingHeatCam at master · sparkfun/SparkFun_GridEYE_Arduino_Library · GitHub

image

That is a lot of zeroes!

//float[] temps =  {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
float[] temps = new float [64];
printArray(temps);

:)